Anthropic files for a Nasdaq IPO under the ticker ANT

Anthropic filed its S-1 registration with the SEC on 26 October and will list on the Nasdaq Global Select Market under the ticker ANT. Neither a price range nor a deal size is in the document yet. We pulled the filing from EDGAR and read the income statement rather than the press summary, because the headline number in this Anthropic IPO is misleading in both directions.

Revenue for the first half of 2026 was $16.29bn against $1.16bn in the same half of 2025, a fourteenfold increase. The net loss over those six months was $80.75bn. Those two figures belong to different conversations.

A $693m operating loss inside an $80.75bn one

The operating line is the one that describes the business. Operating expenses for the half were $16.98bn, which leaves an operating loss of $693m. A year earlier the same line was a $2.14bn loss on $1.16bn of revenue. So the operating loss shrank by 68% while revenue grew fourteenfold, and it now runs at 4.3% of revenue against 184% a year ago.

Everything else is below that line. The change in fair value of convertible notes, derivative liabilities and SAFEs cost $72.39bn in the half, against $10.94bn a year earlier, and it is an accounting consequence of the company being valued higher: those instruments are marked to market, so a rising valuation makes the charge bigger. A second line, other expense, net, took a further $8.76bn. Interest income added back $1.11bn. Net it out and $80.03bn of the $80.75bn loss sits outside operations, or 99.1% of it.

“Because these instruments are marked to market, increases in our enterprise valuation drive increases in this expense. We will continue to recognize changes in the fair value.”

— Anthropic, S-1 registration statement, 26 October 2026, https://www.sec.gov/Archives/edgar/data/2130357/000162828026067168/anthropicpbc-sx1.htm

That is not the same as saying the loss is fictional. These charges do not consume cash, but they describe real claims on the company held by earlier investors, and they only stop growing when the valuation stops rising or the instruments convert at listing. What the split does tell you is that the loss is a function of the fundraising history, not of what it costs to run the business. Underneath all of it sits an ordinary product: a foundation model sold through an API and a chat subscription, and next to the rest of the filing that part reads as dull.

What the filing leaves blank

Two things the filing does not settle. The price range and the raise are blank, so the valuation the market puts on this is still unknown. And the capital intensity behind that 4.3% operating loss sits with the compute suppliers rather than on this balance sheet, which is the same financing question Elon Musk raised about the AI cloud providers this weekend, seen from the opposite end of the contract.

This piece is informational, not a recommendation to buy, sell or hold any asset. Every figure is taken from the S-1 filed on 26 October; the percentages are our arithmetic on those figures, and an S-1 is a registration statement rather than a completed offering.